Why doesn't FF cameras already support 4k video?

Started Mar 10, 2014 | Discussions thread
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Rservello
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Why doesn't FF cameras already support 4k video?
Mar 10, 2014

So I was shooting video and didn't realize I had switched to DX mode to get a little more reach...and noticed that the "crop" was still happening, but it was recording 1080p video.  So that means that even tho it is using less of the sensor it can still record full 1080p video from that smaller section (makes sense since 1080p is still considerably less than the crop area).  So if you can shoot 1080p off the sensor crop, should you logically be able to record 4K just as easily off the FF???  Seems like its really just software and maybe processing power holding this back.

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